Zachary Sang

It looks like the new experimental Theia stack is based on an alpine stack. Looking at the definition in [stacks.json](https://github.com/eclipse/che/blob/master/ide/che-core-ide-stacks/src/main/resources/stacks.json#L56), it looks like `eclipse/che-dev:nightly` is serving as an Alpine base,...

It looks like this Dockerfile is for a CentOS stack base and my understanding is that Alpine and CentOS are mutually exclusive